TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 3 Download

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11-145. UPPER LITTER RACK STRAP AND RING REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: Applicable Models M997, M997A1, M997A2 Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Materials/Parts Two lockwashers (Appendix G, Item 135) Materials/Parts (Cont'd) Two plain-assembled nuts (Appendix G, Item 201) Two capscrews (Appendix G, Item 9) Two solid rivets (Appendix G, Item 270) Manual References TM 9-2320-280-24P Equipment Condition Remove duct assembly (para. 4-103). TM 9-2320-280-20-3 Change 2 11-212.1 1. Remove two capscrews (4), lockwashers (3), and strap bracket (2) from roof (1). Discard lockwashers (3). 2. Remove strap (5) from upper litter rack (6). NOTE Some vehicles may have capscrews and plain-assembled nuts instead of rivets securing the ring assembly. For replacement of rivets, refer to para. 10-66. 3. Remove two rivets (8) and ring assembly (9) from upper litter rack (6). 1. Install ring assembly (9) on upper litter rack (6) with two capscrews (7) and plain-assembled nuts (10). 2. Install strap bracket (2) on roof (1) with two lockwashers (3) and capscrews (4). Tighten cap- screws (4) to 10 lb-ft (14 Nm). 3. Connect strap (5) to upper litter rack (6) and tighten strap (5) to support upper litter rack (6). b. Installation a. Removal FOLLOW-ON TASK: Install duct assembly (para. 4-103).